<!DOCTYPE html>
<html>
<head>
<style>
div { 
  background: red;
  margin-left: 100.5px;
  height: 100px;
  width: 100px;
  -moz-transform-origin: bottom left;
  -moz-transform: rotate(-90deg) translate(-100px, 0);
  transform-origin: bottom left;
  transform: rotate(-90deg) translate(-100px, 0);
}
</style>
</head>
<body>
  <div></div>
</html>
